import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

/**
 * \* Created with IntelliJ IDEA.
 * \* User: Administrator
 * \* Date: 2022/5/21
 * \* Time: 20:28
 * \* To change this template use File | Settings | File Templates.
 * \* Description:
 * \
 */

@WebServlet("/getParameter")
public class GetParameterServlet extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        //预期客户端传来这样的一个请求：/getParameter?userId=123&classId=456
        String userId = req.getParameter("userId");
        String classId = req.getParameter("classId");
        resp.getWriter().write("userId"+userId + ",classId"+classId);
    }
}
